Clamping device



J. F. BARRY CLAMPING DEVICE May 5, 1931.

Filed May 14, 1930 ATTORNEY Patented Mayd, 1931 maria entree era-res earner caries 508MB F. BARRY, 015 BkOOKLYN, NEW YORK, ASSIGNOR. TO BELL TELEPHONE LABQRA- 'EfiEIE-S, HVCDRPOPATE, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK GLWING- DEVIGE Application filed ma 14.

- This invention relates to clamping devices, and particularly to a clamping device for holding abutting conductor ends in position while being joined by rolling or drawinga sleeve .thereon. In such tools a pair of form vision or a clamping device of this character which will be sim le in operation and wherein the wiresto, a connected are held in adjusted position in the sleeve in a positive manner. y

In this device a bar is provided at both ends with plates which are secured thereon and provided with grooves at their free end portions. @111 these plates are hinged other plates having grooves which register with the groove of their associated plates when the plates in each pair are held in parallel relation to each other. is provided for forcing the hinged plates out of paralleland their grooves out of registry to the wires and thus prevent any axial movement of the sleeve while the'rohing operation is heing performed.

the drawing 1 is a perspective view of: device showinga pair of conductors in position thereon. Fig. 2 is a view of a set of plates with portions cut away showing the spring connection between the plates and Fig. 3 is a partial end view taken approximately on line 3-3 of Pi 2.

In Figs. 1 and 2, is a bar to the en s of which the plates 11 and 12 are secured, as by riveting, as shown in Fig. 2. 0n the ends of plates 11 and 12 adjacent the bar 10 are hingedly mounted on pivots 15 and 16 the plates 13 and 14 respectively. The plates 11 and 13 are provided at their free ends with grooves 17-18 and 19-20 respectively. The grooves in these plates are so positioned that when the plates are brought in parallel relation to each othenthe grooves 17-20 and 1930. Serial No. 452,167.

18-19 register with each other as shown in Fig. 2. A spring 21 interposed between the plates 11 and 13 is provided for moving or forcing the hinged plate 13 from the position shown in Fig. 2 to the position shown in Fig. L for a purpose that will be hereinafter described in detail. 3

A small rod 22 is provided for. limiting the movement of the hinged plate 13.

Similarly the plates'12 and 14 are each provided with grooves 23-24: and 25-26 in which the wire is placed for gripping it through the movement of plate 14 under the action of sprin 27. The cooperating grooves in each pair 0 plates 11-13 and 12-14: are each of asmaller width at their bottom in order to receive wires of difierent diameters.

In the operation of this device the wires W, Wf to be connected are first placed with their abutting ends in the sleeve S. The plate 13 is then moved against the resistance of spring 21 in parallel relation with its associated plate 11 wherein the alignment of the grooves 17 and 20 permits the placing of the wires W therein. The plate 13 is then released and the spring 21 forces the plate 20 outward for gripping the wires due to the disalignment of the groove 17 in plate 11 and the groove 20 in plate 13. The wire W is then placed in the groovesEZeiand 2d of plates 12 and 14 wherein this wire is held positively against movement in the manner above described: lhe wires V7 and are thereby positively held against axial move= ment in the sleeve S against the movement of the rollers a and 03 of the tool.

lhe grooves 19-20 in plate 13, 18-1? in plate 11 etc. may be made of any width in order to receive wires of any desired diameters.

What is claimed is;

1. In a wire clamping device, a supportingrod, a plate mounted on each end of said rod, a plate hinged on each of the plates on the rod, means in each plate for receiving the wire, and resilient means acting on each hinged plate for grippin the wire.

2. In a wire clamping evice, a supportin rod, a pair of plates mounted on each en of said rod, one plate on each pair being movable with respect to the other late in that air, resilient means interposed etween the p ates of each pair for forcing each associated movable plate outward and cooperat- 5 ing means in each of said plates for gripping the wire.

3. In a wire clamping device, a supporting rod, a pair of plates mounted on the ends of said rod, registering means carried by the 10 plates in each pair for receiving the wires,

and. means for moving the plates out of registry with respect to the other plates for gripping and holding the wires.

In witness whereof, I hereunto subscribe 16 my name this 13th da of May, 1930;.

J0 EPH F. BARRY. 

